Measurements:
°C
°F
CURRENT WEATHER
17:28
Sanibel Island
94°F
SE 14 mph
Feels like: 108°F
Precip: 4%
World Resorts USA Sanibel Island Weather

7 Day Weather Forecast

08.25
tue
DAY
100°F
N 4 mph
precip
3%
NIGHT
82°F
W 6 mph
precip
11%
08.26
wed
DAY
92°F
N 3 mph
precip
3%
NIGHT
84°F
N 9 mph
precip
69%
08.27
thu
DAY
92°F
NW 10 mph
precip
15%
NIGHT
86°F
NW 9 mph
precip
15%
08.28
fri
DAY
92°F
W 3 mph
precip
4%
NIGHT
82°F
SW 13 mph
precip
21%
08.29
sat
DAY
92°F
NW 8 mph
precip
67%
NIGHT
86°F
SW 8 mph
precip
40%
08.30
sun
DAY
92°F
NW 8 mph
precip
11%
NIGHT
86°F
W 9 mph
precip
19%
08.31
mon
DAY
92°F
NW 7 mph
precip
22%
NIGHT
88°F
W 9 mph
precip
17%

Sanibel Island Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Sanibel Island was 31.0°F. The maximum and minimum values were 30.2°F and 31.9°F respectively.

Sanibel Island on the Weather Map

Best Time to Visit Sanibel Island
The most sunny months:
March 19 days
April 18 days
December 17 days
The most warm months:
July 92.6 °F
August 92.2 °F
June 91.2 °F
Warmest sea temperature:
August 91.9 °F
July 91.5 °F
September 90.3 °F
The most cold months:
January 71.3 °F
December 74.5 °F
February 75.1 °F
The most rainy months:
July 5 days
June 5 days
August 4 days
The most windy months:
October 10 mph
November 10 mph
January 10 mph
more details